Types of Hearing Loss

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Transcript of Types of Hearing Loss

Outer EarMiddle EarInner EarTypes of Hearing LossPeripheral hearing loss is hearing loss as a result of a malfunctioning outer ear, middle ear and/or inner ear structure. The type of peripheral hearing loss depends upon which area is affected. There are three typesof peripheral hearing loss...Conductive Hearing LossAnd Their Associated DisordersAssociated with the outer or middle earInner ear undamagedLoudness reducedMay not be permanentBones of middle ear can be damaged, but there will be bone conduction from skull allowing for some hearing Individuals often speak softly due to air-bone gap: the difference between air and bone with regards to sound conduction (i.e. environmental sounds are muffled but their can hear their own speech)Much like the sensation of covering your ears, or wearing ear plugsTry This!!!!!!Conductive Hearing Loss: Disorders of the Outer EarConductive Hearing Loss: Disorders of the Middle EarSensorineural Hearing Loss: Disorders of the Inner EarMicrotia: pinna misshapen and/or smallCongenital Atresia: no external canal Sensorineural Hearing LossCholesteatoma: mass of epithelial cells that damage ossiclesOtosclerosis: genetic disorder involving the hardening of the stapes footplateOtis Media: inflammation of the middle ear cavity mucosa liningCharacterized by damage to the inner ear (most commonly of the cochlear hair cells)Outer and middle ear undamagedMay be: acquired or genetic- from birth or gradual onsetLikely permanent Hearing damage ranges from mild - profoundRelates to loss of certain frequencies (often higher frequency issues, lower frequency may be unaffected)And This!!!Can you tell the difference between conductive and sensorineural hearing loss? Conductive is caused by obstruction in the middle and outer ear resulting in lower volume. Sensorineural, in most cases, is associated with damage to cochlear hair cells. These hair cells are organized by frequency, and so hearing loss is often frequency oriented. ReviewMixed Hearing Loss

Common Causes of Sensorineural Hearing Loss•Illnesses •Drugs that are toxic to hearing •Hearing loss that runs in the family (genetic or hereditary) •Aging •Head trauma •Malformation of the inner ear •Exposure to loud noise